To obtain the lenses to float on that little layer of tears, you need just best size and shape into the lenses.
Without proper lubrication through the tear ducts, you may also feel an endless need to scratch your eyes out - for regarding a better term! https://Ua-Ix.biz/controller/siteClick.php?id_site=997&link=Www.ophthalmologymanagement.com/issues/2002/november/rx-perspective-dry-eye-a-new-road-to-relief/